Stag beetles everywhere

Sitting in my garden watching it get dark i noticed a large beetle flying into the old Lilac tree. Naturally I grabbed a pot and dashed over to where I had seen it to find not one but three stag beetles!! A mating pair ( seen here, and in extra 1) and another much larger male (see Extra 2). I was amazed! Later I saw a further male flying round the tree. That makes 3 males and 4 Females seen in my garden this year.
I feel so blessed